How do you calculate panelization yield?

Divide good board images remaining after depaneling by the total board images that were on the panels, then multiply by 100. With 5,780 good images out of 6,000 total, yield is 96.33%.

What is a good panelization yield for control boards?

Mature SMT lines running well-designed appliance control board panels typically hold 98-99.5% at the panel/depanel stage. The 96.33% in this example sits 1.67 points below a 98% target, which signals a panel or depanel issue worth investigating.

What is the difference between panelization yield and first-pass yield?

Panelization yield counts board images that physically survive depaneling out of all images on the panel. First-pass yield counts boards that pass functional test on the first try. A board can survive depanel (counted good here) yet still fail FPY.

Why is my panel yield gap negative?

A negative gap means you are below target. Here the gap is reported as 1.67 points because 96.33% falls short of the 98% target; treat any value where actual is under target as the points you need to recover.

How many panels should I release to hit a build quantity?

Divide your required good boards by the expected yield as a decimal. To get 5,780 good boards at 96.33% yield you would release enough panels to populate roughly 6,000 images, matching the total here.

What causes panelization yield loss?

The most common drivers are panel warpage during reflow, micro-cracking at v-score or tab-route depanel points, edge-image solder defects from oven edge effects, and handling damage on thin appliance control boards.

Appliance Electronics & Control Boards calculator

Panelization Yield Calculator

Panelization yield measures the percentage of individual board images that survive SMT assembly and depaneling intact, out of every image populated on the production panels. For appliance control boards, where small panels often carry 4-up, 6-up, or array layouts, this number drives how many bare panels you must release to hit a build quantity. Process engineers and SMT line leads track it daily because a yield drift of even one or two points changes panel starts, depanel scrap, and the cost of every shippable board. It is the cleanest single metric for separating panel-level losses (warpage, depanel cracking, edge defects) from device-level placement and solder defects.

What this calculator does

Calculate PCB panelization yield from good board images, total board images, and target panel yield for appliance control boards.
a manufacturing engineer needs to evaluate panel utilization and good board yield for an appliance control PCB
It computes panelized good-board yield as good board images after depaneling divided by total board images on the panels, then subtracts your target to show the gap in percentage points.

Formula used

Panelized good-board yield = good board images after depaneling ÷ total board images on panels × 100
Panel yield gap to target = panelized good-board yield - target panelization yield

Inputs explained

Good board images after depaneling:
Total board images on panels:
Target panelization yield:

How to use the result

Use it at end of line after depaneling to reconcile good shippable boards against panels released, and to set or audit panel-start quantities for a control board build.
It only captures yield at the panel/depanel stage, so boards that pass depanel but later fail final functional test or burn-in are still counted as good here.

Current U.S. benchmarks

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Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).
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Common questions

How do you calculate panelization yield? Divide good board images remaining after depaneling by the total board images that were on the panels, then multiply by 100. With 5,780 good images out of 6,000 total, yield is 96.33%.
What is a good panelization yield for control boards? Mature SMT lines running well-designed appliance control board panels typically hold 98-99.5% at the panel/depanel stage. The 96.33% in this example sits 1.67 points below a 98% target, which signals a panel or depanel issue worth investigating.
What is the difference between panelization yield and first-pass yield? Panelization yield counts board images that physically survive depaneling out of all images on the panel. First-pass yield counts boards that pass functional test on the first try. A board can survive depanel (counted good here) yet still fail FPY.
Why is my panel yield gap negative? A negative gap means you are below target. Here the gap is reported as 1.67 points because 96.33% falls short of the 98% target; treat any value where actual is under target as the points you need to recover.
How many panels should I release to hit a build quantity? Divide your required good boards by the expected yield as a decimal. To get 5,780 good boards at 96.33% yield you would release enough panels to populate roughly 6,000 images, matching the total here.

Last reviewed 2026-05-12.